Lokhuukujoyina okuguquguqukayoilukiwe, i-FM igunyaziwe. Ubude bungaba phezu kwemfuneko yamakhasimende.
Lokhu kuhlangana okuguquguqukayo izinhlangothi zombili kungaba ama-flange antantayo. Ama-flange antantayo enza ukuthi kube lula ukubeka phakathi nendawo lapho kulungiswa ama-flange okukhwelana. Futhi i-lap joint ingaba insimbi engagqwali, evumela zonke izingxenyeukuxhumanakuya phakathi insimbi engagqwali.